Rik - it's all about making the step up to the big arena.
Form is temporary, class is permanent. The trouble is telling the two apart.
It's true that Ramprakash and Hick have had exceptional careers in the county championship yet both have been relative failures in test cricket.
At one time, the selectors used to discard players too early.
Gooch springs to mind - a couple of tests against Australia in 1975 then 3 years in the wilderness before he managed to force his way back in.
Before him, Dennis Amiss was another one. It took him about 10 tests to really find his feet and he went on to be more than adequate.
In recent years, the selectors have had an amazing amount of faith in certain players, yet this faith has hardly been rewarded.
Hick wasn't really discarded until he'd been a fixture in the side for 6 years, yet in that time he consistently flattered to deceive (true pace was his undoing).
Ramprakash clearly tried the patience of the selectors a little more than Hick, being ditched for the first time after just a couple of series. Understandable, since his average was about that of a decent tail-ender (and after 52 tests wasn't any better - any decent bowling was his undoing, so it must have been down to temperament in his case).
It may be that selectors are reluctant to chuck relative failures out now without giving them a fair crack of the whip, so it's good to see that Key is firmly in their thoughts (not that he can be considered a relative failure).
Play him at 5.